Radeon RX 6950 XT vs Radeon RX Vega 64

Intro

Compare those specs to the Radeon RX Vega 64, which makes use of a 14 nm design. AMD has clocked the core frequency at 1247 MHz. The HBM2 memory is set to run at a speed of 1890 MHz on this particular model. It features 4096 SPUs along with 256 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX Vega 64		295 Watts
Radeon RX 6950 XT		335 Watts
	Difference: 40 Watts (14%)

Memory Bandwidth

In theory, the Radeon RX 6950 XT should perform just a bit faster than the Radeon RX Vega 64 in general. (explain)

Radeon RX 6950 XT		589824 MB/sec
Radeon RX Vega 64		495411 MB/sec
	Difference: 94413 (19%)

Texel Rate

The Radeon RX 6950 XT is a lot (about 93%) faster with regards to AF than the Radeon RX Vega 64. (explain)

Radeon RX 6950 XT		616000 Mtexels/sec
Radeon RX Vega 64		319232 Mtexels/sec
	Difference: 296768 (93%)

Pixel Rate

The Radeon RX 6950 XT will be much (more or less 209%) better at anti-aliasing than the Radeon RX Vega 64, and will be able to handle higher resolutions while still performing well. (explain)

Radeon RX 6950 XT		246400 Mpixels/sec
Radeon RX Vega 64		79808 Mpixels/sec
	Difference: 166592 (209%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.